The chicken jerky products, which are made in China, may contain minute amounts of antibiotic residue, the companies said Wednesday. The antibiotics have been approved by Chinese and European Union regulators, but have not been approved in the U.S.

The companies emphasized that the treats do not pose a safety risk to pets, but they are still pulling them from the market. The recall does not cover other products sold by the companies.

Milo’s Kitchen said there is no known health risk associated with the antibiotics, but their presence means the products do not meet its standards. The company said the chemicals “should not be present in the final food product.”

The recalls come after the New York State Department of Agriculture detected the antibiotics in samples of the companies’ products. Purina said the regulators asked that the affected products be pulled from New York state stores.

Federal regulators have also been looking into reports of pet illnesses stemming from their snacks.

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